Leg Strength or Velocity of Movement Which Is More Influential on the Balance of Mobility Limited Elders?
| Autor: | Jonathan F. Bean, Dan K. Kiely, Sharon LaRose, Douglas J. Mayson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Male
medicine.medical_specialty Physical Therapy Sports Therapy and Rehabilitation Article Physical medicine and rehabilitation Postural Balance Medicine Humans Muscle Strength Leg strength Mobility Limitation Gait Balance (ability) Aged Aged 80 and over business.industry Extramural Rehabilitation Exercise therapy Exercise Therapy Cross-Sectional Studies Logistic Models Multivariate Analysis Muscle strength Physical therapy Accidental Falls Female business |
| Popis: | To determine which component of leg power (maximal limb strength or limb velocity) is more influential on balance performance in mobility limited elders.In this cross-sectional analysis we evaluated 138 community-dwelling older adults with mobility limitation. Balance was measured using the Unipedal Stance Test, the Berg Balance Test (BERG), the Dynamic Gait Index, and the performance-oriented mobility assessment. We measured one repetition maximum strength and power at 40% one repetition maximum strength, from which velocity was calculated. The associations between maximal estimated leg strength and velocity with balance performance were examined using separate multivariate logistic regression models.Strength was found to be associated [odds ratio of 1.06 (95% confidence interval, 1.01-1.11)] with performance on the Unipedal Stance Test, whereas velocity showed no statistically significant association. In contrast, velocity was consistently associated with performance on all composite measures of balance (BERG 14.23 [1.84-109.72], performance-oriented mobility assessment 33.92 [3.69-312.03], and Dynamic Gait Index 35.80 [4.77-268.71]). Strength was only associated with the BERG 1.08 (1.01-1.14).Higher leg press velocity is associated with better performance on the BERG, performance-oriented mobility assessment, and Dynamic Gait Index, whereas greater leg strength is associated with better performance on the Unipedal Stance Test and the BERG. These findings are likely related to the intrinsic qualities of each test and emphasize the relevance of limb velocity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|